A330 ATA 32 - LANDING GEARS

How is the MLG operated during normal extension/retraction?. Manually. Electrically. Hydraulically. Pneumatically.

What does the side stay assembly do when the MLG is extended?. It retracts the landing gear. It holds the MLG in the extended position. It locks the landing gear doors. It engages the wheel brakes.

How can the closure of the MLG doors be prevented when the aircraft is on the ground?. By installing a lock collar on each door actuator. By disengaging the hydraulic system. By using manual locks. By deactivating the shortening mechanism.

How many doors close each MLG bay?. Three. Two. Four. Five.

How are the MLG doors operated?. Hydraulically. Electrically. Mechanically. Pneumatically.

In what scenarios does the Alternate Braking system automatically take over?. When normal braking system fails. When blue hydraulic system pressure is high. When parking brake is engaged. When green hydraulic system pressure is low.

What are the main parts of the NLG?. Lock stay assembly, NLG leg assembly, steering actuators. Steering assembly, axle, sliding tube assembly. Shock absorber, wheel assembly, main fitting. Hydraulic pump, control unit, shock absorber.

Where does the NLG retract?. Forward into the NLG bay. Aft into the NLG bay. Sideways into the NLG bay. Upwards into the NLG bay.

How many doors close the NLG bay?. Four doors and a fixed fairing. Two doors and a sliding cover. Three doors and a hinged panel. Five doors.

How are the forward NLG doors operated?. Hydraulically. Mechanically. Electrically. Pneumatically.

How are the aft NLG doors operated?. Mechanically. Hydraulically. Electrically. Pneumatically.

How is the hydraulic pressure sent to the brakes modulated?. By the servo valve controlled by the BSCU. Directly by the braking pedals. By the pressure switch. By the wheel speed sensors.

What system does the BSCU prioritize in the Normal Braking Manual Mode when both hydraulic systems are available?. Blue hydraulic system. Green hydraulic system. Both systems equally. It depends on the pilot's input.

How is the Alternate Braking system operated?. Electrically. Manually. By the BSCU. Automatically only.

How is the parking brake activated in the parking/ultimate emergency braking system?. By the BSCU. By manual hydraulic pump. By the PARK BRK handle being set to ON. By a foot pedal.

How long can the parking/ultimate emergency braking system hold the brakes on, according to the accumulator. Eight hours. Twelve hours. Twenty-four hours. Six hours.

Where is the access panel for the MLG located?. Aft of the MLG. FWD of the MLG. On the left side of the aircraft. On the right side of the aircraft.

How is the MLG ground door-opening handle operated to open the door uplocks?. Push the handle upwards. Pull the handle downwards. Twist the handle clockwise. Push the handle inwards.

How many independently connected sub-systems does the hydro-electrical system controlling the L/G operation have?. One. Two. Three. Four.

When does an LGCIU change-over occur?. When gear UP is selected or if the active LGCIU fails. When the aircraft is on the ground or during take-off. When the L/G is not in the correct configuration for retraction or during landing. When the aircraft reaches a certain altitude or if there is a loss of hydraulic pressure.

What does the UNLK indication represent on the Landing Gear indicator?. The corresponding gear is not locked (UP or DOWN). The landing gear is properly locked in place. The landing gear is retracting. The landing gear is malfunctioning.

What stops the movement of the L/G control lever to the UP position after take-off?. The baulk solenoid. The LGCIU. The proximity sensors. The isolation safety valve.

What action is taken by the isolation safety valve when the aircraft's airspeed is more than 280 Kts?. It is de-energized closed. It is energized open. It is de-energized open. It is energized closed.

Which component provides data to the BSCU about the green hydraulic pressure upstream from the normal brake selector valve?. Pressure Switch. BSCU. Servo Valves. Hydraulic Fuses.

What function do the hydraulic fuses serve in the braking system architecture?. To prevent excessive fluid loss in case of brake line rupture. To control and monitor the pressure delivered by the servo valves. To release brake pressures as a function of the pressure control orders and anti-skid orders. To actuate one set of pistons on each brake unit.

What component measures the blue accumulator pressure for cockpit indication in the alternate braking system?. Pressure Transducer. Triple Indicator. Brake Accumulator. Dual Valve.

Where are the parking brake accumulators located in the aircraft?. Forward of the main landing gear bay in the belly fairing. Left and right alternate brake supply lines. Downstream from the dual shuttle valve. Serviced from the blue hydraulic ground service panel.

What component sends the power supplies to the park brake control valve?. PRK BRK selector switch. Brake accumulators. Parking brake operated valve. Accumulator pressure transducer.

Which component continuously monitors the absolute pressure of each individual tire?. Tire Pressure Indicating System (TPIS). Pressure sensor. Rotating transmitter. Electronic module.

When does the steering system switch over automatically between system 1 and system 2 of the BSCU?. At each L/G down selection or in case of system 1 or 2 failure. After the L/G has extended. After the autopilot guidance orders are received. At each ground speed transition.